package com.tianji.learning.mq;

import com.tianji.api.dto.trade.OrderBasicDTO;
import com.tianji.common.constants.MqConstants;
import com.tianji.common.utils.CollUtils;
import com.tianji.learning.service.ILearningLessonService;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.amqp.core.ExchangeTypes;
import org.springframework.amqp.rabbit.annotation.Exchange;
import org.springframework.amqp.rabbit.annotation.Queue;
import org.springframework.amqp.rabbit.annotation.QueueBinding;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Component;

@Slf4j
@Component
@RequiredArgsConstructor  // 方便注入
public class LessonAddListener {
    private final ILearningLessonService lessonService;

    /*MqConstants.Exchange.ORDER_EXCHANGE,
        MqConstants.Key.ORDER_PAY_KEY*/
    @RabbitListener(bindings = @QueueBinding(
            value = @Queue(value = "learning.lesson.pay.queue",durable = "true"),
            exchange = @Exchange(name = MqConstants.Exchange.ORDER_EXCHANGE,type = ExchangeTypes.TOPIC),
            key = MqConstants.Key.ORDER_PAY_KEY
    ))
    public void listenLessonPay(OrderBasicDTO orderBasicDTO){
        // 1.判空处理
        if (orderBasicDTO == null || orderBasicDTO.getUserId() == null || CollUtils.isEmpty(orderBasicDTO.getCourseIds())){
            // 数据有误，直接结束
            log.error("接收到的mq消息有误，订单数据为空");
            return;
        }

        // 2.添加课程
        log.debug("监听到用户{}的订单{}。需要添加课程{}到课表中，",orderBasicDTO.getUserId(),orderBasicDTO.getOrderId(),orderBasicDTO.getCourseIds());
        lessonService.addUserLessons(orderBasicDTO.getUserId(),orderBasicDTO.getCourseIds());
    }
}
